/**
  ******************************************************************************
  * @file    I2S/SPI_I2S_Switch/stm32f10x_it.c 
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    08-April-2011
  * @brief   Main Interrupt Service Routines.
  *          This file provides template for all exceptions handler and peripherals
  *          interrupt service routine.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"

extern u32 TimingDelay;
extern u8 set_channel;
extern u8 set_n[2];
extern u16 fre1;
extern u16 fre2;
char RtxData[10];
u16 fre1_temp[2] = {0};
u16 fre2_temp[2] = {0};
u8 i = 0;


/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup I2S_SPI_I2S_Switch
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/******************************************************************************/
/*            Cortex-M3 Processor Exceptions Handlers                         */
/******************************************************************************/

/**
  * @brief  This function handles NMI exception.
  * @param  None
  * @retval None
  */
void NMI_Handler(void)
{
}

/**
  * @brief  This function handles Hard Fault exception.
  * @param  None
  * @retval None
  */
void HardFault_Handler(void)
{
  /* Go to infinite loop when Hard Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Memory Manage exception.
  * @param  None
  * @retval None
  */
void MemManage_Handler(void)
{
  /* Go to infinite loop when Memory Manage exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Bus Fault exception.
  * @param  None
  * @retval None
  */
void BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Usage Fault exception.
  * @param  None
  * @retval None
  */
void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {}
}

/**
  * @brief  This function handles Debug Monitor exception.
  * @param  None
  * @retval None
  */
void DebugMon_Handler(void)
{
}

/**
  * @brief  This function handles SVCall exception.
  * @param  None
  * @retval None
  */
void SVC_Handler(void)
{
}

/**
  * @brief  This function handles PendSV_Handler exception.
  * @param  None
  * @retval None
  */
void PendSV_Handler(void)
{
}

/**
  * @brief  This function handles SysTick Handler.
  * @param  None
  * @retval None
  */
void SysTick_Handler(void)
{
	TimingDelay--;
}

void USART2_IRQHandler(void)
{
	if( USART_GetITStatus(USART2,USART_IT_RXNE)== SET){
		USART_ClearITPendingBit(USART2,USART_IT_RXNE);
		RtxData[i++] = USART_ReceiveData(USART2);
		
		if((RtxData[0]=='S')&&(RtxData[1]=='E')&&(RtxData[2]=='T')&&(RtxData[3]==':')){
			set_channel = (u8)(RtxData[4]-'0') - 1;
			if(RtxData[6] == '1')
				set_n[set_channel] = 10;
			else
				set_n[set_channel] = (u8)(RtxData[6]-'0');
		}
		if(RtxData[i] == '\n'){
			i = 0 ;
			for(i = 0;i<10;i++)
				RtxData[i] = 0;
		}
	}
}

void TIM2_IRQHandler(void){
	static u8 catch_flag = 0x00;
	if(TIM_GetITStatus(TIM2,TIM_IT_CC2) == SET){
		TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
		if(catch_flag & 0x01){
			fre1_temp[1] = TIM_GetCounter(TIM2);
			catch_flag &= 0x10;
			if(fre1_temp[0]<fre1_temp[1])
				fre1 = 1000000/(fre1_temp[1]-fre1_temp[0]);
			else
				fre1 = 1000000/(fre1_temp[1]+ 65535 -fre1_temp[0]);
		}
		else if((catch_flag &0x01)==0){
			catch_flag |= 0x01;
			fre1_temp[0] = TIM_GetCounter(TIM2);
		}
	}
	if(TIM_GetITStatus(TIM2,TIM_IT_CC3) == SET){
		TIM_ClearITPendingBit(TIM2, TIM_IT_CC3);
		if((catch_flag & 0x10)!=0){
			fre2_temp[1] = TIM_GetCounter(TIM2);
			catch_flag &= 0x01;
			if(fre2_temp[0]<fre2_temp[1])
				fre2 = 1000000/(fre2_temp[1]-fre2_temp[0]);
			else
				fre2 = 1000000/(fre2_temp[1]+65535-fre2_temp[0]);
		}
		else if((catch_flag &0x10)==0){
			catch_flag |= 0x10;
			fre2_temp[0] = TIM_GetCounter(TIM2);
		}
	}
}
void TIM3_IRQHandler(void){
	u16 capture = 0;
	if(TIM_GetITStatus(TIM3,TIM_IT_CC1)==SET){
		TIM_ClearITPendingBit(TIM3, TIM_IT_CC1);
		capture = TIM_GetCounter(TIM3);
		TIM_SetCompare1(TIM3,capture+1000000/fre1/set_n[0]);
	}
	if(TIM_GetITStatus(TIM3,TIM_IT_CC2)==SET){
		TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);
		capture = TIM_GetCounter(TIM3);
		TIM_SetCompare2(TIM3,capture+1000000/fre2/set_n[1]);
	}
}
/******************************************************************************/
/*                 STM32F10x Peripherals Interrupt Handlers                   */
/*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
/*  available peripheral interrupt handler's name please refer to the startup */
/*  file (startup_stm32f10x_xx.s).                                            */
/******************************************************************************/

/**
  * @brief  This function handles PPP interrupt request.
  * @param  None
  * @retval None
  */
/*void PPP_Switch_IRQHandler(void)
{
}*/

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
